Corrugating machinery



Jan. 15, 1929. 1,699,412

5. P. THOMSON ET AL CORRUGATING MACHINERY FiledrFeb. 1927 I BY MATTORNEY INVENTORS Fatented Jan. 15, 1929.

ROCKHILLtOF FORT HAYNE, INDIANA.

oonrtuenrirro .iyinorrrnnny.

Application filed February This invention relatesto improvements inrorrueatmy inachmer' es eciall a llcable b to iron bars employed 1n thereini'orcementot concrete roads and other structures. The ob ject of theinurovement to provide a machine or" high capacity for corrug'ating ironbars that will becontinuous and self feeding in operation. Anotherobject "is to. -so' construct the machine as to permit of adjustmentwhereby the angula-rity of the corrugations formed in the iron-bar maybe varied more or less accordingly as adjustments are made, and anotherobject is to provide thecorrugat ing members with replaceable parts atthose portions thereof that are subjected verest stress and wear; 4 j IThese objects are accomplished by theconstruction illustrated in theaccompanying drawings, in which I Fig. 1 is a plan view of a machineembodyng the invention, there being included a bar n course ofprogressionthrough the" machine Fig. 2 is an elevation projected fromFig. 1, portions thereof being omitted; and

ig. 3 is a detail plan view of the adjusting to the semeans as appliedto one oi the corrugating' members.

The characters appearing in the description" r ler to parts shown in thedrawings and dosignated thereon by corresponding characters;

The invention is constituted of'a bench l having a flat top 2 supportedon legs 8 and having transversely disposed channel beams 4 and 5, saidbeams being disposed in parallel relation with each otheiyone above theother. The legs 3 on each side of the bench are connected b corresoondinhorizontal beams 6 that support a pair of bearings 7 and 8 res)ectively.

Tn supported relation with the beams 4 and are disposed a pair of spacedbearings 9 and 10 respectively each of which extends upwardly throughthe top ,2 of the bench, and has mounted therein a correspondingvertical shaft l112 provided at its lower end with a miter gear 13-14..r

In the bearings 7 is journaledacountershaft 15 having fixed thereon-apair of miter gears 1617 that have engagement respectively with theformer miter gears on said vertical shafts, and being so disposed as toactuate said former miter gears in opposite directions when saidcountershattis rotated. Upon the outer end ot the countershait is fixeda gear 18 that has actuated relation with a pinion 19,

7, i927. serial at. ice-A56."

which pinion is fixed on a drive-shaft 20 ournaled in the bearings 8.The drive-shaftis provided with a fixed drive-wheel 21 to which isapplied a belt (not shown) by whichit is actuated." The bearing 10'h asa foot 22 atgits lower end and also at a point spaced from ts upperend,"said'feet being provided with slots 23 through which bolts 2%entend for securing said'ieet to'the'correspondingbeams 4 and,5.' Theslots are so disposed as to admit of adjustable" movement lengthwise inthe corresponding J beams, there being provided an adjusting screw 25 inthe upper part of the bench at one side thereof that bears against thecorresponding foot 22am acts to prevent spreading movement of the hearing 10 relative to the bearing 9.

Upon the upper end o't each vertical shaft 1112 is fi ed a correspondingrotor 2627, the one being the counterpart of the other and having theform of a star.' Each rotor has an annular series of male dies 28 thatform respectively'the points of the star,'ancl also an annular series offemale dies 29 that form the respective crotches of the star; "A seriesof radial ribs 30 on each rotor abut the respective dies 28-29-wherebysaiddies are sustained.

The rotors are so positioned on their respectiveshaftsthatthe male diesof each rotor articulate with the corresponding female dies of the otherrotor. t the front and back of'the benchis-provided acorrespondingpairof guide members 31 32 for the purpose hereinafter stated.

The dies are made of hardened metal and are removably'applied in theirrespective positions'on the corresponding rotor by any suitable means,such as is ordinarily resorted to, by which they are held rigidly inplace.

In the operation of the invention an initially straight bar of iron 83is introduced onto the top of the bench by passing it endwise betweenthe guides 31, and the rotors are set in motion by the action of thedrivingmechw nism. The bar is then manually progressed forwardly uponthe top'of the bench and between the rotors to such extent as to becomecaught between one of the male dies 01. one rotor and the correspondingfemale die of the other, whereupon the bar is drawn, by the action ofthe rotors therebetween and pro gressed over the bench and between theguides 32 in a corrugated state, there being formed in the bar asuccession of spaced bends 34: of alternate and opposite an ularit-y.The

in the bench structure; a pair of spaced bearings, one of which isadjustably movable so asto vary the space between said bearings; aVertical shaft in each of said bearlngs; a

driving gear mechanism having actuating relation with said verticalshafts operable to 1'0 tate the shafts in opposite directions; a rotorfixed on the upper end of each shaft in a plane above the top of thebench, the one rotor being the counterpart of the other, and each havingthe form of a star; an annular series of removable male dies oneachrotor located thereon to form the star points thereof respectively;an annular series of removable female dies on each rotor located thereonforming the crotches thereof respectively, said rotors being so disposedthat the star points of each rotor articulate correspondingly with the.

crotches of the other rotor as said rotors are revolved; and spacedguide members at each end of the bench operable to limit lateral swayingmovement of said bars.

2. A machine for corrugating iron bars including a bench structure; apair of spaced bearings including means for adjustably spacing saidbearings; a vertically disposed shaft ineach of said bearings; amechanism having actuating relation with said vertical shafts operableto rotate said shafts in opposite directions; a star shaped rotor fixedon the upper end of each shaft in a common plane with each other abovethe top of the bench, one rotor being the counterpart of the other, saidrotors being so disposed that the points of each rotor articulatecorresponding ly with the crotches of the other rotor as said rotorsrevolve; and spaced guide members operable to limit lateral swayingmovement of said bars.

3. A machine for corrugating iron bars including a bench structure; apair of spaced bearings including means for adjustably spacing saidbearings; a vertically disposed shaft in each of said bearings; amechanism having actuating relation with said vertical shaftsoperableto'rotate said shafts in oppositedirectio ns; and a star shaped rotorfixed on the upper end of each shaft in a common plane with each otherabove the topofthe bench, one rotor being the counterpart of theother,said rotors being so disposed that the points of each rotor articulatecorrespondingly with the crotches of the other rotor as said rotorsrevolve.

4. A machine for corrugating iron bars comprising two or more companionsubstantially star-shaped rotors, arranged in intermeshing pairs,renewable die members at the points and crotches respectively of saidrotors, means for simultaneously rotating said pairs of rotors in unisonand in opposite directions, and means for limiting the lateral swayingmovement of said bars.

5; A. machine for corrugating iron bars comprising two or morepairs ofintermeslr ing substantially star-shaped rotors, shafts supporting saidrotors, means for adjusting said pairs" of rotors towards or from eachother, means for simultaneously rotating the pairs of rotors and inopposite directions to each other, a, plurality of removable male andfemale dies at the points and crotches respectively of said rotors, andmeans for limiting the lateral swaying movement of said bars whilebeingcorrugated. v p

In testimony whereof we affix our signatures.

SAMUEL P. THOMSON. HOW LL o. ROCKHILL.

